Leveling system for aerial platforms

Details Leveling system for aerial platforms Leveling system for aerial platforms

1997-09-03

1999-08-31

Stodola, Daniel P.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

182 22, E04G 100

Patent

active

059441380

ABSTRACT:
A system for leveling a personnel carrying platform mounted on the end of an elongated vehicle mounted boom. A pendulum controlled hydraulic valve controls the application of fluid pressure to a pair of cylinders equipped on their ends with a series of links extending along a drum connected to the platform mounting pin. When the platform deviates from a level position, one of the cylinders is retracted to turn the platform mounting pin in a direction to correct the deviation. An interlock valve disables the platform leveling system unless the boom is being moved. A manual override valve allows the platform to be tilted for storage or other reasons.

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patent: 4799573 (1989-01-01), Simnovec et al.
patent: 4858723 (1989-08-01), Holmes et al.
patent: 5016731 (1991-05-01), Holmes

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